Smoke impact prevention structure for heating surface of waste heat boiler

Abstract

The utility model provides a smoke impact prevention structure of a waste heat boiler heating surface, which comprises a boiler main body, an air inlet pipe arranged at the top end of the boiler main body, an air outlet arranged at the bottom end of the side wall of the boiler main body, a liquid inlet pipe arranged at the bottom end of one side wall of the boiler main body and a liquid outlet arranged at the top end of the side wall of the boiler main body, the buffer assembly is arranged at the top end in the boiler body and connected with the air inlet pipe, the water storage tank is arranged at the other end of the liquid inlet pipe, and the heated assembly is arranged in the boiler body. According to the smoke impact prevention structure for the heating surface of the waste heat boiler, when smoke enters the buffer assembly and passes through the buffer layer, the air speed is reduced, particle sedimentation is facilitated, high-temperature particles are filtered, abrasion of the heating surface caused by heating smoke is reduced, and the service life is prolonged; the hardness of heated water is effectively reduced, impurities are reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a structure for preventing flue gas impact on the heating surface of a waste heat boiler. Background Technique

[0002] A waste heat boiler refers to a boiler that heats water to a certain temperature by using the waste heat in various industrial processes, waste materials or waste liquids, as well as the heat generated after the combustion of combustible substances therein. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with flue gas box and flue waste heat recovery are also called waste heat boilers. Waste heat boilers can produce hot water or steam through waste heat recovery for use in other sections. The welding process of the heating surface of a waste heat boiler is complex, its mechanical properties are not high, and the manufacturing, installation and maintenance processes are complex. When applied to the waste heat recovery of high-temperature granular materials or fluids with a relatively high solid content, its wear resistance is poor, and it is easy to have the pipe wall worn through, resulting in steam explosion. Content of the Utility Model

[0003] The utility model provides a structure for preventing flue gas impact on the heating surface of a waste heat boiler to solve the technical problems existing in the above background technique.

[0004] The purpose and effect of the structure for preventing flue gas impact on the heating surface of the waste heat boiler of the utility model are achieved by the following specific technical means: The structure for preventing flue gas impact on the heating surface of a waste heat boiler includes a boiler main body, an air inlet pipe arranged at the top end of the boiler main body, an air outlet arranged at the bottom end of the side wall of the boiler main body, a liquid inlet pipe arranged at the bottom end of one side wall of the boiler main body, and a liquid outlet arranged at the top end of the other side wall of the boiler main body.

[0005] A buffer assembly is arranged at the top end inside the boiler main body and is connected to the air inlet pipe, and includes a buffer structure arranged inside the buffer assembly and an ash accumulation structure arranged at the bottom end of the buffer assembly;

[0006] A water storage tank is arranged at the other end of the liquid inlet pipe;

[0007] A heating assembly is arranged inside the boiler main body.

[0008] Preferably, the buffer structure of the buffer assembly includes:

[0009] A buffer layer is fixedly installed on the inner side wall of the buffer assembly;

[0010] A mounting plate is fixedly installed on the inner side wall of the buffer assembly;

[0011] A fan is movably installed on the buffer layer through a bearing;

[0012] A mounting net is fixedly installed on the inner side wall of the mounting plate;

[0013] The mounting plate is rectangular in shape, and its size is adapted to the internal size of the buffer assembly. The size of the mounting net is adapted to the internal size of the mounting plate, and the number of the buffer layers is multiple.

[0014] Preferably, the dust accumulation structure of the buffer assembly includes:

[0015] An air inlet net, which is arranged inside the side wall below the buffer layer at one end of the buffer assembly far from the boiler body;

[0016] A dust accumulation layer, which is the part below the air inlet net inside the buffer assembly;

[0017] A dust removal filter screen is arranged inside the air inlet net.

[0018] Preferably, the water storage tank includes:

[0019] A liquid inlet tank, which is arranged at the other end of the liquid inlet pipe;

[0020] A magnetic layer, which is arranged inside the liquid inlet tank;

[0021] A filter layer, which is arranged above the magnetic layer below the liquid inlet pipe inside the liquid inlet tank;

[0022] Filter holes, which are arranged through the magnetic layer;

[0023] A water inlet pipe, which is arranged through the bottom end of the side wall of the liquid inlet tank far from the liquid inlet pipe and is connected below the magnetic layer;

[0024] The material of the magnetic layer is a magnet, and the material of the filter layer is activated carbon.

[0025] Preferably, the heating component includes:

[0026] A square pipe, which is arranged inside the boiler body, connected to the liquid inlet pipe at one end and connected to the liquid outlet at the other end;

[0027] A heating pipe, which is arranged inside the square pipe and connected to the inside of the square pipe pipeline;

[0028] The overall shape of the square pipe is a rectangular frame, and the heating pipes are arranged in a rectangular array.

[0029] Preferably, heating fins are arranged on the heating pipes. The heating fins are fan-shaped, and the heating fins are arranged in equidistant straight lines on the heating fins.

[0030] Preferably, a fan is arranged inside the air inlet pipe, and a smoke box is arranged at the other end of the air inlet pipe.

[0031] Preferably, the boiler body is fixedly installed on the ground, and a shock wave soot cleaning device is arranged inside the boiler body.

[0032] Beneficial effects:

[0033] 1. By setting up a buffer structure and an ash accumulation structure, flue gas enters the buffer assembly through the inlet pipe. At this time, the temperature of the flue gas is relatively high, the wind speed is relatively fast or it carries high-temperature granular materials. When passing through the buffer layer, it will push the fan to rotate, reducing the wind speed and facilitating the settlement of particles. Then it enters the interior of the boiler main body through the intake grid to heat the heating assembly. The intake grid further filters high-temperature particles, and the adsorbed and settled particles are concentrated in the ash accumulation layer for easy cleaning, reducing the abrasion of the heating flue gas on the heating surface and increasing the service life.

[0034] 2. By setting up a water storage tank, the heated water first enters the water storage tank for storage. The magnetic field effect of the magnetic layer can effectively reduce the hardness of the water, and the activated carbon in the filter layer adsorbs impurities to filter the water body. When the water in the water storage tank is used, it passes through the filter layer and enters the inlet pipe and then into the boiler main body, and will be filtered by the filter layer, effectively reducing the hardness of the heated water and reducing impurities, and increasing the service life of the device. Brief Description of the Drawings

[0035] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0036] Figure 2 It is a schematic diagram of the internal structure of the boiler main body of the present utility model.

[0037] Figure 3 It is a schematic diagram of the buffer assembly structure of the present utility model.

[0038] Figure 4 It is a schematic diagram of the heating assembly structure of the present utility model.

[0039] Figure 5 It is a schematic diagram of the heating pipe structure of the present utility model.

[0040] Figure 6 It is a schematic diagram of the water storage tank structure of the present utility model.

[0041] Figures 1-6 Among them, the corresponding relationship between the part names and the drawing numbers is as follows:

[0042] 1. Boiler main body; 2. Inlet pipe; 3. Inlet liquid pipe; 4. Water storage tank; 401. Inlet liquid tank; 402. Magnetic layer; 403. Filter layer; 404. Filter holes; 5. Inlet water pipe; 6. Intake grid; 7. Buffer layer; 701. Mounting plate; 702. Fan; 703. Mounting net; 8. Ash accumulation layer; 9. Buffer assembly; 10. Outlet; 11. Outlet liquid port; 12. Heating assembly; 1201. Square pipe; 1202. Heating pipe; 1203. Heating fin. Detailed Embodiment

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0044] Embodiment 1

[0045] As shown in Figure 1 , Figure 2 and Figure 3 shown: It includes a boiler main body 1, an air inlet pipe 2 provided at the top end of the boiler main body 1, an air outlet 10 provided at the bottom end of the side wall of the boiler main body 1, a liquid inlet pipe 3 provided at the bottom end of one side wall of the boiler main body 1, and a liquid outlet 11 provided at the top end of the other side wall of the boiler main body 1. A buffer assembly 9 is provided at the top end inside the boiler main body 1 and is connected to the air inlet pipe 2, including a buffer structure provided inside the buffer assembly 9 and an ash accumulation structure provided at the bottom end of the buffer assembly 9; a water storage tank 4 is provided at the other end of the liquid inlet pipe 3; a heat receiving assembly 12 is provided inside the boiler main body 1.

[0046] The buffer structure of the buffer assembly 9 includes: a buffer layer 7 fixedly installed on the inner side wall of the buffer assembly 9, a mounting plate 701 fixedly installed on the inner side wall of the buffer assembly 9, a fan 702 movably installed on the buffer layer 7 through a bearing, a mounting net 703 fixedly installed on the inner side wall of the mounting plate 701. The mounting plate 701 is in the shape of a rectangular frame, and the size of the mounting plate 701 is adapted to the internal size of the buffer assembly 9. The size of the mounting net 703 is adapted to the internal size of the mounting plate 701. The number of buffer layers 7 is multiple. The flue gas enters the buffer assembly 9 from the air inlet pipe 2. At this time, the temperature of the flue gas is relatively high, the wind speed is relatively fast, or it carries high-temperature granular materials. When passing through the buffer layer 7, it will push the fan 702 to rotate, reducing the wind speed and facilitating the settlement of particles.

[0047] Further, the ash accumulation structure of the buffer assembly 9 includes: an air inlet net 6 provided inside the side wall below the buffer layer 7 at the end of the buffer assembly 9 away from the boiler main body 1, an ash accumulation layer 8 for the part below the air inlet net 6 inside the buffer assembly 9. A dust removal filter screen is provided inside the air inlet net 6. The air inlet net 6 further filters high-temperature particles, and the adsorbed and settled particles are concentrated in the ash accumulation layer 8 for easy cleaning.

[0048] Embodiment 2

[0049] As shown in Figure 1 and Figure 6As shown in the figure: The water storage tank 4 includes: a liquid inlet tank 401 provided at the other end of the liquid inlet pipe 3, a magnetic layer 402 provided inside the liquid inlet tank 401, a filter layer 403 provided above the magnetic layer 402 and below the liquid inlet pipe 3 inside the liquid inlet tank 401, filter holes 404 penetrating through the magnetic layer 402, a water inlet pipe 5 penetrating through the bottom end of the side wall of the liquid inlet tank 401 away from the liquid inlet pipe 3 and connecting below the magnetic layer 402. The material of the magnetic layer 402 is a magnet, and the material of the filter layer 403 is activated carbon. The magnetic field effect of the magnetic layer 402 can effectively reduce the hardness of water, and the activated carbon in the filter layer 403 adsorbs impurities and filters the water body.

[0050] Embodiment Three

[0051] As shown in the attached Figure 1 and the attached Figure 2 and the attached Figure 4 and the attached Figure 5 As shown in the figure: The heat-receiving component 12 includes: a square pipe 1201 provided at one end inside the boiler main body 1 and connected to the liquid inlet pipe 3 and at the other end connected to the liquid outlet 11, a heat-receiving pipe 1202 provided inside the square pipe 1201 and connected to the inside of the pipeline of the square pipe 1201. The overall shape of the square pipe 1201 is a rectangular frame, and the heat-receiving pipes 1202 are arranged in a rectangular array. The square pipe 1201 provides support, and the heat-receiving pipes 1202 cover the inside of the boiler main body 1.

[0052] Furthermore, heat-receiving fins 1203 are provided on the heat-receiving pipes 1202. The shape of the heat-receiving fins 1203 is fan-shaped, and the heat-receiving fins 1203 are arranged in equidistant straight lines on the heat-receiving fins 1203, and the heat-receiving fins 1203 increase the heat-receiving area.

[0053] Furthermore, a blower is provided inside the air inlet pipe 2, and a smoke box is provided at the other end of the air inlet pipe 2. The flue gas enters the buffer component 9 from the air inlet pipe 2.

[0054] Furthermore, the boiler main body 1 is fixedly installed on the ground, and a shock wave soot cleaning device is provided inside the boiler main body 1. The shock wave soot cleaning device inside the boiler main body 1 performs soot cleaning operations on the heat-receiving surface.

[0055] Working principle: Flue gas enters the buffer assembly 9 through the intake pipe 2. At this time, the temperature of the flue gas is relatively high, the wind speed is relatively fast or it carries high-temperature granular materials. When passing through the buffer layer 7, it will push the fan 702 to rotate, reducing the wind speed, facilitating the sedimentation of particles, and entering the inside of the boiler body 1 through the intake mesh 6 to heat the heating assembly 12. The intake mesh 6 further filters high-temperature particles, and the adsorbed and sedimented particles are concentrated in the ash accumulation layer 8 for easy cleaning, reducing the abrasion of the heated flue gas on the heating surface and improving the service life. The heated water is first stored in the water storage tank 4. The magnetic field effect of the magnetic layer 402 can effectively reduce the hardness of the water, and the activated carbon in the filter layer 403 adsorbs impurities and filters the water body. When the water in the water storage tank 4 is used, it passes through the filter layer 403, enters the liquid inlet pipe 3, and then enters the boiler body 1. Filtered by the filter layer 403, it effectively reduces the hardness of the heated water and reduces impurities, improving the service life of the device. The water is heated in the heating assembly 12. The square tube 1201 provides support, the heating tubes 1202 are distributed throughout the inside of the boiler body 1, and the heating fins 1203 increase the heating area, using the heat energy of the flue gas to heat the water.

Claims

1. Structure for preventing flue gas impact on heating surface of waste heat boiler, comprising a boiler main body (1), an intake pipe (2) arranged at the top end of the boiler main body (1), an air outlet (10) arranged at the bottom end of the side wall of the boiler main body (1), a liquid inlet pipe (3) arranged at the bottom end of one side wall of the boiler main body (1), and a liquid outlet (11) arranged at the top end of the other side wall of the boiler main body (1), characterized in that: A buffer assembly (9), arranged inside the top end of the boiler main body (1) and connected to the intake pipe (2), comprising a buffer structure arranged inside the buffer assembly (9) and an ash accumulation structure arranged at the bottom end of the buffer assembly (9); A water storage tank (4), arranged at the other end of the liquid inlet pipe (3); A heating assembly (12), arranged inside the boiler main body (1).

2. The anti-smoke-impact structure of the heating surface of the waste heat boiler according to claim 1, characterized in that: The buffer structure of the buffer assembly (9) comprises: A buffer layer (7), fixedly installed on the inner side wall of the buffer assembly (9); A mounting plate (701), fixedly installed on the inner side wall of the buffer assembly (9); A fan (702), movably installed on the buffer layer (7) through a bearing; A mounting net (703), fixedly installed on the inner side wall of the mounting plate (701); The mounting plate (701) is in the shape of a rectangular frame, the size of the mounting plate (701) is adapted to the internal size of the buffer assembly (9), the size of the mounting net (703) is adapted to the internal size of the mounting plate (701), and the number of the buffer layers (7) is multiple.

3. The anti-smoke-impact structure of the heating surface of the waste heat boiler according to claim 1, wherein: The ash accumulation structure of the buffer assembly (9) comprises: An intake net (6), arranged inside the side wall below the buffer layer (7) at one end of the buffer assembly (9) away from the boiler main body (1); An ash accumulation layer (8), which is the part below the intake net (6) inside the buffer assembly (9); A dust removal filter screen is arranged inside the intake net (6).

4. The structure for preventing the heat transfer surface of the waste heat boiler from being impacted by flue gas according to claim 1, wherein: The water storage tank (4) comprises: A liquid inlet tank (401), arranged at the other end of the liquid inlet pipe (3); A magnetic layer (402), arranged inside the liquid inlet tank (401); A filter layer (403), arranged inside the liquid inlet tank (401) above the magnetic layer (402) and below the liquid inlet pipe (3); Filter holes (404), arranged through the magnetic layer (402); A water inlet pipe (5), arranged through the bottom end of the side wall of the liquid inlet tank (401) away from the liquid inlet pipe (3) and connected to the lower part of the magnetic layer (402); The material of the magnetic layer (402) is a magnet, and the material of the filter layer (403) is activated carbon.

5. The structure for preventing the heat transfer surface of the waste heat boiler from being impacted by flue gas according to claim 1, wherein: The heating assembly (12) comprises: A square pipe (1201), arranged inside the boiler main body (1), connected to the liquid inlet pipe (3) at one end and connected to the liquid outlet (11) at the other end; A heating pipe (1202), arranged inside the square pipe (1201) and connected to the pipeline inside the square pipe (1201); The square pipe (1201) is in the overall shape of a rectangular frame, and the heating pipes (1202) are arranged in a rectangular array.

6. The structure for preventing the heat transfer surface of the waste heat boiler from being impacted by flue gas according to claim 5, characterized in that: Heat receiving fins (1203) are arranged on the heating pipes (1202), the heat receiving fins (1203) are in the shape of a sector, and the heat receiving fins (1203) are arranged in equidistant straight lines on the heat receiving fins (1203).

7. The structure for preventing the heat transfer surface of the waste heat boiler from being impacted by flue gas according to claim 1, wherein: A blower is arranged inside the intake pipe (2), and a smoke box is arranged at the other end of the intake pipe (2).

8. The structure for preventing flue gas impact on the heating surface of the waste heat boiler according to claim 1, characterized in that: The boiler main body (1) is fixedly installed on the ground, and a shock wave soot cleaning device is arranged inside the boiler main body (1).

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